Latest Work Completed Mantua, New Jersey
Original Site:
September 2004
E-mail: usav8or@yahoo.com
Looking at the Vedeneyev M14 still another big ol' radial
And here I thought it was a realatively newer design.
It's been around since the '30's.
I just read something on the Vedeneyev that
surprised the hell out of me (didn't really surprise me.) The Russians
operate M14 generating sets in Siberian oil fields and these engines are
expected to run for 20,000 hours before overhaul. If that
ain't impressive for an aircraft engine, I don't know what
is. That statement alone has driven me to start thinking about
hanging this radial engine on the front of my Skybolt.
Vedeneyev M14
A Few Stats:
Engine Power Output:
360-450 hp, last development
460hp electronic injection (much less consumption: 30liters/hour at cruise power)
Weight 214 kg (472 lb)
Displacement 8 lit
Time Between Overhauls:
TBO 2250 hours by US standards. Typically Russian logbook states "engine life 2250 hours" with IRAN's or Inspect and Replace As Necessary every 500 hours or so. Some have confused these IRAN's as low TBO's or overhauls.
The M14 is a nine cylinder, left turning radial engine. It's induction system uses a gear driven supercharger and a carburator utilizing an automatic mixture control. It's been designed to run while in inverted flight.
There are several versions of the M14:
M-14P - 360 HP
M-14PF - 400 HP
M-14R - 450 HP
Manufacturers: Voronezh Mechanical Plant / OKB Motorostroyeniya, Voronezh, Russia
Designation: M-14P
Cooling system: air cooled
Engine starting system: Compressed air type
Engine continuous operation time:
At take-off rating: Up to 5 min
At maximum permissible speed of rotation: Up to 1 min
At other ratings: Not limited
Inverted engine operation:
Ratings: Nominal
Continuous operation time: Up to 2 min
Total time within service life: Up to 18 %
Maximum permissible speed of rotation: 2950 (101 %) r/min
Acceleration (pickup) from 760 r/min (idle) to take-off
rating on stationary airplane: Up to 3 s
Maximum permissible crankshaft speed drop when changing over to one-magneto operation
at nominal rating II and cruise rating I (low propeller pitch): 85 r/min (3 %)
Number and arrangement of cylinders: 9, radial, single-row
Cylinder numbering is counterclockwise if viewed from rear cover side, top cylinder is No. 1
Cylinder bore: 105 mm
Piston stroke:
Cylinder No. 4: 130 mm
Cylinders No. 3 and No. 5: 130.15 mm
Cylinders No. 2 and No. 6: 130.23 mm
Cylinders No. 8 and No. 9: 130.39 mm
Cylinders No. 1 and No. 7: 131.25 mm
Total displacement: 10.161 1
Compression ratio: 6.3±0.1
Direction of rotation of crankshaft and airscrew shaft: LH
Engine dry mass: 214 kg+2%
NOTE: Engine dry mass does not include mass of the generator, compressor, fine fuel
filter with pipelines, engine mount ring, exhaust manifold parts, tachometer generator.
Engine overall dimensions:
Diameter (over valve mechanism case covers): (985±3) mm
Length: (924±3) mm